Human Impact

What is the main pollution concern with cars?

• air pollution

• water pollution

• light pollution

Spreading fertilizer on your lawn may be good for your grass but it can be bad for the environment because

• it can lead to pollution of nearby soil from animals walking through your grass.

• it can lead to pollution from runoff into nearby water sources.

• it could seep through the grass into your pipes and into your houses drinking water.

• it can pollute the air.

The graph indicates what about the relationship between atmospheric carbon dioxide and time

• over time, the amount of atmospheric carbon dioxide increases

• over time, the amount of atmospheric carbon dioxide decreases

• over time, the amount of atmospheric carbon dioxide stays the same

• over time, the amount of atmospheric carbon dioxide does not change

An increase in Earth’s average temperature due to the buildup of carbon dioxide and other gases in Earth's atmosphere is called

• ozone buildup.

• global warming

• bioremediation.

• thermal pollution

Many scientists are convinced that the growing human population is contributing to the gradual warming trend that is occuring on planet Earth. According to the researchers, which human activity is MOST likely to be a contributing factor in global warming?

• Humans have added carbon dioxide to the atmosphere by burning fossil fuels.

• Humans have released vast quantities of chemicals that have created excess ozone in the upper atmosphere.

• Humans have changed the chemistry of the world's oceans by the use of phosphates and nitrogen-containing compounds.

• Humans have created acid rain by releasing sulfuric acids into the air in the exhaust from factories and power plants.

Ice cores from Antarctica allow scientists to measure the amounts of atmospheric carbon dioxide from long ago. These samples would BEST provide evidence for

• climate change.

• continental drift

• the big bang theory.

• magnetic field reversal.

The causes of climate change can be divided into two categories: natural and human causes. The natural variation of the climate has always been part of Earth’s history. It is now a great concern that the climatic changes occurring today may be the direct result of man's activities.

All BUT ONE is a natural cause of climate change.

• ocean currents

• volcanic eruptions

• Earth's orbital changes

• increased greenhouse gases

Turbines, or mills, are used to produce alternative energy and are powered by ________.

• friction

• water

• waves

• wind

Carbon dioxide is constantly exchanged among the atmosphere, ocean, and land. Carbon dioxide is produced and absorbed by microorganisms, plants, and animal by natural processes which help maintain a natural balance. However, since the beginning of Industrial Revolution, human activities have contributed substantially to Carbon dioxide gases in the atmosphere.

Which conclusion might be drawn between the relationship found in the graphs of Global Carbon Emissions and Global Temperatures over the past 150 years.

• decreased Carbon emission from human activities are directly correlated to decreased global temperatures

• increased Carbon emission from human activities are directly correlated to increased global temperatures

• increased Carbon emission from human activities are directly correlated to decreased global temperatures

• decreased Carbon emission from human activities are directly correlated to increased global temperatures

In 2015, about ten percent of total U.S. energy consumption was from renewable energy sources. Renewable energy plays an important role in reducing greenhouse gas emissions. When renewable energy sources are used, the demand for fossil fuels is reduced.

The town where Sanjay and his family live wants to cut back on their use of non-renewable resources at home. The town is located in Texas. The town's people want to cut their dependency on non-renewable resources. They also want to minimize the amount of particulate matter they put into the atmosphere. Texas is one of the leading states in wind power, but the town wants to add other renewable, non-polluting, energy resources to their energy plan. What resources, other than wind energy, fit the bill?

• natural gas and hydroelectric

• solar, hydroelectric, and geothermal

• hydroelectric power, biomass, and nuclear

• biomass, natural gas, solar, and hydroelectric